ICD-10 Code C83.86 – Other non-follicular lymphoma, intrapelvic lymph nodes (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C83.86 – Other non-follicular lymphoma, intrapelvic lymph nodes
What it is
This code identifies a diagnosis of non-follicular lymphoma involving the lymph nodes within the pelvis. Use it when the record specifies this lymphoma subtype and the intrapelvic nodal site.
Clinical signs
Clinical features vary; refer to documentation. Patients may have pelvic lymphadenopathy confirmed by imaging, biopsy, or pathology, with findings consistent with non-follicular lymphoma.
When to use this code
Use C83.86 when the provider documents other non-follicular lymphoma affecting intrapelvic lymph nodes. It is appropriate for confirmed nodal disease in the pelvis, including pathology-based diagnoses or clearly documented site-specific lymphoma. If the anatomic site is not stated, check documentation.
Do not use for
Do not use this code for follicular lymphoma, unspecified lymphoma type, or lymphoma in a different nodal region. If the chart only says “lymphoma” without pelvic node involvement, this code is not supported.
Coding tip
Verify both the lymphoma subtype and the pelvic nodal location before assigning this code.